Traditional cancer treatments have centered on surgery, chemotherapy, or radiation. But researchers are continuing to develop new methods of immunotherapy, which aids and enhances the body’s immune system to attack and kill cancer cells. Immunotherapy was even named the 2016 advance of the year by the American Society of Clinical Oncology. In this segment, discover the revolutionary science behind immunotherapy, and meet a cancer patient whose life was transformed when he joined a clinical trial and received a new immunotherapy treatment.